... shape, U shape, All wraped duct section with formed connections DUCT LINE-7GDF Flange Automatically Duct Line7 is special design for Eroupe ... it is modular design with different flexible workstations.It produces duct from coil stock to ready-to-assembleare “L”,“U”,“Wrap ... enhanced rack Industry CNC control system and MEIFOMER speical duct manufacture software.PLC&coputer control,,you just need input ...